Voiceflow is a Voice Agent Infrastructure company founded in 2019 and based in San Francisco, United States. It has raised $35M in total funding, most recently a Series B in 2023 at a $105M valuation.
| Date | Stage | Amount | Valuation | Lead investors |
|---|---|---|---|---|
| Aug 15, 2023 | Series B | $15M | $105M | OpenView Venture Partners |
| Aug 1, 2021 | Series A | $20M | — |
| Felicis Ventures |
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Collaborative visual canvas for designing and deploying AI agents across voice, chat, and embedded widget channels. Uses a block-based flow system (Talk, Listen, Logic, Dev) with LLM integration, knowledge-base lookup, and API call blocks. Supports model-agnostic deployment across major LLM providers; used by 200,000+ teams including Spotify and BMW for rapid conversational AI prototyping and production rollout.
Centralized content management system for organizing all agent assets—prompts, variables, intents, components, and knowledge-base documents—in a single workspace. Enables product and design teams to maintain brand-consistent responses across multiple agent deployments without duplicating logic, with version control and staging-to-production promotion workflows.
Built-in testing framework that lets teams create, run, and batch-run evaluations against deployed agents using Pass/Fail, text-match, and rating criteria. Surfaces regression issues before production updates and measures quality improvements over time, addressing a key operational gap for enterprises managing multiple concurrent agent deployments.
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